GB339334A - Improvements in or relating to the manufacture of paper and the like - Google Patents
Improvements in or relating to the manufacture of paper and the likeInfo
- Publication number
- GB339334A GB339334A GB26218/29A GB2621829A GB339334A GB 339334 A GB339334 A GB 339334A GB 26218/29 A GB26218/29 A GB 26218/29A GB 2621829 A GB2621829 A GB 2621829A GB 339334 A GB339334 A GB 339334A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wood
- pulp
- treatment
- mill
- chlorination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
339,334. White, A. E., (Mead Pulp & Paper Co.). Aug. 28, 1929. Pulp, preparation of.-In the preparation of a free pulp of high strength, colour, and clay carrying quality suitable for paper making from wood, straw, fibrous grasses and the like, the material, suitably prepared as by an incomplete chemical digestion designed to soften the binding material holding the fibres together, is subjected to multi-stage and coordinated chlorination treatment, the first stage being with an insufficient amount of chlorinating agent acting at a limited temperature on a diluted pulp, the second acting on a thickened pulp with a stronger chlorinating agent. The process is particularly applicable to the treatment of hard, deciduous or non-resinous broad-leafed wood such as chestnut, oak, walnut, mahogany, gum, and the like, which occur as waste wood in wood-working and furniture factories, and for treating other waste wood supplies such as leached chestnut chips from tannin-extract mills, cull lumber, wood shavings, saw mill waste, &c. The drawings illustrate suitable apparatus for the process and the treatment of leached chestnut chins is described. These are fed from a chip storage or breaker 10 by a conveyer 11 to the feed hopper 12 of a digester 13 where the material is heated for 1-2 hours at 125 C. with a solution of an alkali metal sulphite such as sodium sulphite and a salt of a weakly ionized polybasic acid such as sodium bicarbonate, or a tartrate, citrate, borate or oxalate. The excess liquor is then withdrawn and the temperature raised to 160-180 C. for 1-4 hours, carbonic acid gas being supplied at 30 to maintain the liquor approximately neutral. The digested material is washed in the tank 35, then fed by a conveyer 42. bucket elevator 56 and conveyer 57 to a rod mill 60, or other disintegrator such as a Bauer mill. swinghammer mill, edge runner mill. or the like. Further treatment apparatus includes stock chests 68, 102. head boxes 76, 108, mixing box 83, screen 90 and Oliver filter 95. From the head box 108 the material suitably diluted is fed by the pine 110 together with chlorinating agent from a pipe 111 to a mixer 113 and flows continuously therethrough into a chamber 115 provided with a baffle, the capacity of the chamber and the rate of flow being adjusted to provide the desired reaction time. Suitable chlorinating agents are chlorine, sodium hypochlorite, bromine and the like. After the first chlorination, the material passes to a washing apparatus, a worm-type drum washer 123 being shown. Treatment in a centrifugal thickener 131 follows and the thickened stock passes by an elevator 142 to a chlorinating tower 143 where a strong and drastic chlorination is effected with chlorine gas, or bromine, admitted at 150, outlets 151, 152 being provided for the discharge of gas which passes to recovery apparatus. Water or other slushing liquid is introduced at the base and the stock passed to an annular trough 158 and thence to a tank 162 where an alkali such as caustic soda, sodium carbonate or sodium sulphite is supplied to dissolve the reaction products of chlorination. Filtering in an Oliver or like filter 176, bleaching in the tanks 180, 193, 184 and final filtering at 192 completes the process and the treated material passes to a stock chest 194 for further treatment or for use. The product is easily hvdrated and is thus suitable for bonds, writing papers, parchment, glassine. wax papers, and the like. Specification 339,333 is referred' to.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US273241A US1843465A (en) | 1928-04-27 | 1928-04-27 | Paper manufacture |
US329080A US1843466A (en) | 1928-12-29 | 1928-12-29 | Paper manufacture |
US329081A US1843467A (en) | 1928-12-29 | 1928-12-29 | Paper manufacture |
US329082A US1880587A (en) | 1928-12-29 | 1928-12-29 | Paper manufacture |
GB26218/29A GB339334A (en) | 1929-08-28 | 1929-08-28 | Improvements in or relating to the manufacture of paper and the like |
GB31330/30A GB339599A (en) | 1929-08-28 | 1929-08-28 | Improvements in or relating to the manufacture of paper |
FR681218D FR681218A (en) | 1929-08-28 | 1929-09-02 | Developments in papermaking and the like |
GB37578/29A GB341226A (en) | 1929-08-28 | 1929-12-07 | Improvements in or relating to the manufacture of paper and the like |
GB37577/29A GB347096A (en) | 1929-08-28 | 1929-12-07 | Improvements in or relating to the manufacture of paper |
FR688125D FR688125A (en) | 1929-08-28 | 1929-12-24 | Developments in papermaking and the like |
FR688124D FR688124A (en) | 1929-08-28 | 1929-12-24 | Improvements in papermaking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB26218/29A GB339334A (en) | 1929-08-28 | 1929-08-28 | Improvements in or relating to the manufacture of paper and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB339334A true GB339334A (en) | 1930-11-28 |
Family
ID=10240185
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26218/29A Expired GB339334A (en) | 1928-04-27 | 1929-08-28 | Improvements in or relating to the manufacture of paper and the like |
GB31330/30A Expired GB339599A (en) | 1929-08-28 | 1929-08-28 | Improvements in or relating to the manufacture of paper |
GB37577/29A Expired GB347096A (en) | 1929-08-28 | 1929-12-07 | Improvements in or relating to the manufacture of paper |
GB37578/29A Expired GB341226A (en) | 1929-08-28 | 1929-12-07 | Improvements in or relating to the manufacture of paper and the like |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31330/30A Expired GB339599A (en) | 1929-08-28 | 1929-08-28 | Improvements in or relating to the manufacture of paper |
GB37577/29A Expired GB347096A (en) | 1929-08-28 | 1929-12-07 | Improvements in or relating to the manufacture of paper |
GB37578/29A Expired GB341226A (en) | 1929-08-28 | 1929-12-07 | Improvements in or relating to the manufacture of paper and the like |
Country Status (3)
Country | Link |
---|---|
US (4) | US1843465A (en) |
FR (3) | FR681218A (en) |
GB (4) | GB339334A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE748949C (en) * | 1938-01-26 | 1944-11-14 | Margarete Possanner Von Ehrent | Process for producing semi-pulp or cellulose |
US2516664A (en) * | 1944-10-16 | 1950-07-25 | West Virginia Pulp & Paper Co | Hypochlorite bleaching of ground wood |
US2435566A (en) * | 1944-10-16 | 1948-02-10 | West Virginia Pulp & Paper Co | Peroxide bleaching of ground wood |
NL129513C (en) * | 1946-01-01 | |||
US2719788A (en) * | 1949-11-14 | 1955-10-04 | Mo Och Domsjoe Ab | Producing bleached sulphite pulp with high strength properties from hardwoods |
US2730426A (en) * | 1951-06-20 | 1956-01-10 | Cellulose Dev Corp Ltd | Treating vegetable fibrous material with chlorine gas |
US2872314A (en) * | 1954-07-12 | 1959-02-03 | Waldorf Paper Products Co | Method of making pulp |
US2947655A (en) * | 1955-04-21 | 1960-08-02 | Bauer Bros Co | Method of producing wood pulp |
US2858213A (en) * | 1956-04-20 | 1958-10-28 | Condi Engineering Corp | Wood chip digestion |
US3016324A (en) * | 1957-03-07 | 1962-01-09 | Bauer Bros Co | Method and apparatus for producing wood pulp |
US3035963A (en) * | 1958-02-19 | 1962-05-22 | Lummus Co | Process for the continuous digestion of cellulosic materials |
US3092537A (en) * | 1959-06-05 | 1963-06-04 | Cons Paper Corp Ltd | Flameproofing of organic materials |
US3819470A (en) * | 1971-06-18 | 1974-06-25 | Scott Paper Co | Modified cellulosic fibers and method for preparation thereof |
NO137651C (en) * | 1975-10-31 | 1978-03-29 | Myrens Verksted As | PROCEDURE AND APPARATUS FOR CONTINUOUS TREATMENT OF FINDEL FIBER MATERIAL OR CELLULOSIZED MASS WITH GAS WITHOUT COVER. |
US4560572A (en) * | 1981-08-19 | 1985-12-24 | Sharkey Watanabe | Citrus fruit processing and food product |
US4746404A (en) * | 1984-05-01 | 1988-05-24 | Laakso Oliver A | Chip presteaming and air washing |
CN107130456B (en) * | 2016-02-29 | 2021-05-07 | 山东泉林纸业有限责任公司 | Continuous cooking method and device for grass raw materials |
CN109112873A (en) * | 2018-08-13 | 2019-01-01 | 薛润林 | The method of twin-screw extruder production purified cotton |
-
1928
- 1928-04-27 US US273241A patent/US1843465A/en not_active Expired - Lifetime
- 1928-12-29 US US329082A patent/US1880587A/en not_active Expired - Lifetime
- 1928-12-29 US US329080A patent/US1843466A/en not_active Expired - Lifetime
- 1928-12-29 US US329081A patent/US1843467A/en not_active Expired - Lifetime
-
1929
- 1929-08-28 GB GB26218/29A patent/GB339334A/en not_active Expired
- 1929-08-28 GB GB31330/30A patent/GB339599A/en not_active Expired
- 1929-09-02 FR FR681218D patent/FR681218A/en not_active Expired
- 1929-12-07 GB GB37577/29A patent/GB347096A/en not_active Expired
- 1929-12-07 GB GB37578/29A patent/GB341226A/en not_active Expired
- 1929-12-24 FR FR688124D patent/FR688124A/en not_active Expired
- 1929-12-24 FR FR688125D patent/FR688125A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB341226A (en) | 1931-01-15 |
GB347096A (en) | 1931-04-07 |
FR688125A (en) | 1930-08-19 |
US1880587A (en) | 1932-10-04 |
US1843465A (en) | 1932-02-02 |
FR688124A (en) | 1930-08-19 |
US1843467A (en) | 1932-02-02 |
GB339599A (en) | 1930-11-28 |
FR681218A (en) | 1930-05-12 |
US1843466A (en) | 1932-02-02 |
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